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Kvant 2 (77KSD, TsM-D, 11F77D)

Kvant 2, the first of two expansion modules planned to enlarge the Mir space station complex, arrived at the station on
6 December 1989. The three-section addition, originally called Module D, was launched
from Tyuratam on November 26, via a three-stage Proton-K
booster. It was originally scheduled to dock on December 2, but was delayed by technical
problems. The new module successfully docked at Mir's front axial port. Two days later, a
Liappa docking arm re-docked the module at the upper radial port.

A cylinder, it measured 13.73 m long and 4.35 m maximum diameter. Two 26.6-sq-m solar
panels provided 6.9 kW of power. The module was divided into a service/cargo section, a
payload/equipment section and an airlock permitting easy exit and entrance to Mir during
EVAs. Kvant 2 carried an East German multi-spectral remote sensing camera and an Ikar
("Icarus") manned maneuvering unit.